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    <title>Document</title>
    <script>
      function notSingle() {
        return {
          a: 1,
        };
      }

      var a = notSingle();
      var b = notSingle();
      console.log(a === b); //false

      // ______________________________________________

      function notSingle2() {
        this.a = 123;
      }

      var a2 = notSingle2();
      var b2 = notSingle2();
      console.log(a2 === b2); //false
    </script>
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  <body></body>
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